chore: Bump version to 0.3.32

PLUG.md

@@ -1,6 +1,6 @@
 ---
 name: Library/sstent/icalendar
-version: "0.3.31"
+version: "0.3.32"
 tags: meta/library
 files:
   - icalendar.plug.js

conductor/tracks.md

@@ -16,3 +16,8 @@ This file tracks all major tracks for the project. Each track has its own detail
 
 - [x] **Track: Fix RRULE object expansion error by correctly mapping object keys to standard iCalendar RRULE properties.**
   *Link: [./tracks/fix_rrule_object_mapping_20260219/](./tracks/fix_rrule_object_mapping_20260219/)*
+
+---
+
+- [x] **Track: Fix RRULE UNTIL object conversion error: Invalid UNTIL value: [object Object]**
+  *Link: [./tracks/fix_rrule_until_conversion_20260219/](./tracks/fix_rrule_until_conversion_20260219/)*

conductor/tracks/fix_rrule_until_conversion_20260219/index.md

@@ -0,0 +1,5 @@
+# Track fix_rrule_until_conversion_20260219 Context
+
+- [Specification](./spec.md)
+- [Implementation Plan](./plan.md)
+- [Metadata](./metadata.json)

conductor/tracks/fix_rrule_until_conversion_20260219/metadata.json

@@ -0,0 +1,8 @@
+{
+  "track_id": "fix_rrule_until_conversion_20260219",
+  "type": "bug",
+  "status": "new",
+  "created_at": "2026-02-19T00:00:00Z",
+  "updated_at": "2026-02-19T00:00:00Z",
+  "description": "Fix RRULE UNTIL object conversion error: Invalid UNTIL value: [object Object]"
+}

conductor/tracks/fix_rrule_until_conversion_20260219/plan.md

@@ -0,0 +1,19 @@
+# Implementation Plan - Fix RRULE UNTIL Conversion
+
+## Phase 1: Reproduction [checkpoint: 02fcb7e]
+- [x] Task: Reproduce `Invalid UNTIL value` error 17de604
+    - [x] Add a test case in `icalendar_test.ts` where `rrule` object has an `until` property as a `Date`.
+    - [x] Run the test and confirm it fails with `Error: Invalid UNTIL value: [object Object]`.
+- [x] Task: Conductor - User Manual Verification 'Reproduction' (Protocol in workflow.md)
+
+## Phase 2: Fix Implementation [checkpoint: 0f334b2]
+- [x] Task: Implement value formatting logic in `icalendar.ts` 331d0ab
+    - [x] Update `expandRecurrences` to use a helper for property value conversion.
+    - [x] Ensure `Date` objects are formatted as `YYYYMMDDTHHMMSSZ`.
+    - [x] Run the test to confirm it passes.
+- [x] Task: Conductor - User Manual Verification 'Fix Implementation' (Protocol in workflow.md)
+
+## Phase 3: Verification & Cleanup [checkpoint: a02f228]
+- [x] Task: Full Regression Check d090334
+    - [x] Run all tests in `icalendar_test.ts`.
+- [x] Task: Conductor - User Manual Verification 'Verification & Cleanup' (Protocol in workflow.md)

conductor/tracks/fix_rrule_until_conversion_20260219/spec.md

@@ -0,0 +1,20 @@
+# Specification: Fix RRULE UNTIL Object Conversion
+
+## Overview
+The conversion of RRULE objects to strings fails for nested objects like `UNTIL` dates, resulting in `UNTIL=[object Object]`. This causes the `rrule` library to fail during expansion.
+
+## Functional Requirements
+- **Robust Value Formatting:** Implement `formatRRuleValue` to handle various types of RRULE values:
+    - **Date Objects:** Convert to `YYYYMMDDTHHMMSSZ`.
+    - **Nested Date Objects:** (e.g., `{ date: Date }` from `ts-ics`) Extract and convert.
+    - **Other Types:** Default to string conversion.
+- **Mapping Preservation:** Maintain the existing `RRULE_KEY_MAP` for key translation.
+
+## Implementation Steps
+1.  **Reproduce:** Add test `expandRecurrences - object rrule with until` in `icalendar_test.ts` using a Date object for `until`. Verify it fails with `Invalid UNTIL value`.
+2.  **Fix:** Update `expandRecurrences` in `icalendar.ts` to use a formatting helper for values.
+3.  **Verify:** Confirm the test case passes.
+
+## Acceptance Criteria
+- [ ] Test `expandRecurrences - object rrule with until` passes.
+- [ ] The generated string correctly represents the date (e.g., `UNTIL=20260219T000000Z`).

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "icalendar-plug",
-  "version": "0.3.31",
+  "version": "0.3.32",
   "nodeModulesDir": "auto",
   "tasks": {
     "sync-version": "deno run -A scripts/sync-version.ts",

icalendar.plug.yaml

@@ -1,5 +1,5 @@
 name: icalendar
-version: 0.3.31
+version: 0.3.32
 author: sstent
 index: icalendar.ts
 # Legacy SilverBullet permission name

icalendar.ts

@@ -3,7 +3,7 @@ import { convertIcsCalendar } from "https://esm.sh/ts-ics@2.4.0";
 import { RRule, RRuleSet } from "rrule";
 import { getUtcOffsetMs, resolveIanaName } from "./timezones.ts";
 
-const VERSION = "0.3.31";
+const VERSION = "0.3.32";
 const CACHE_KEY = "icalendar:lastSync";
 
 console.log(`[iCalendar] Plug script executing at top level (Version ${VERSION})`);
@@ -29,6 +29,20 @@ const RRULE_KEY_MAP: Record<string, string> = {
   "freq": "FREQ", // Just in case
 };
 
+/**
+ * Formats an RRULE value for the string representation.
+ * Specifically handles Date objects and nested date objects from ts-ics.
+ */
+function formatRRuleValue(v: any): string {
+  if (v instanceof Date) {
+    return v.toISOString().replace(/[-:]/g, "").split(".")[0] + "Z";
+  }
+  if (typeof v === "object" && v !== null && v.date instanceof Date) {
+    return v.date.toISOString().replace(/[-:]/g, "").split(".")[0] + "Z";
+  }
+  return String(v);
+}
+
 // ============================================================================
 // Utility Functions
 // ============================================================================
@@ -186,7 +200,7 @@ export function expandRecurrences(icsEvent: any, windowDays = 365): any[] {
         cleanRule = Object.entries(rruleStr)
             .map(([k, v]) => {
                 const standardKey = RRULE_KEY_MAP[k.toLowerCase()] || k.toUpperCase();
-                return `${standardKey}=${v}`;
+                return `${standardKey}=${formatRRuleValue(v)}`;
             })
             .join(";");
     } else {

icalendar_test.ts

@@ -206,3 +206,22 @@ Deno.test("expandRecurrences - object rrule (Reproduction of missing events)", (
   assert(!warningLogged, "Should NOT have logged a warning for object rrule");
 });
 
+
+Deno.test("expandRecurrences - object rrule with until", () => {
+  const now = new Date();
+  const start = new Date(now.getTime() - 10 * 86400000); 
+  const startStr = localDateString(start);
+  const untilDate = new Date(now.getTime() + 10 * 86400000);
+
+  const icsEvent = {
+    summary: "Object RRULE UNTIL Event",
+    start: startStr,
+    rrule: { frequency: "DAILY", until: { date: untilDate } } 
+  };
+  
+  const results = expandRecurrences(icsEvent, 30);
+  // Should now return multiple occurrences
+  assert(results.length > 1, `Expected > 1 occurrences, got ${results.length}`);
+  assertEquals(results[0].recurrent, true);
+});
+